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[mips] Use __clear_cache builtin instead of cacheflush() 

Use __clear_cache builtin instead of cacheflush() in
Unix Memory::InvalidateInstructionCache().

Differential Revision: http://reviews.llvm.org/D7198

llvm-svn: 227269
This commit is contained in:
Petar Jovanovic 2015-01-27 23:30:18 +00:00
parent f55afeb432
commit 4a11849034
1 changed files with 2 additions and 13 deletions
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15
llvm/lib/Support/Unix/Memory.inc
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@ -333,23 +333,12 @@ void Memory::InvalidateInstructionCache(const void *Addr,
for (intptr_t Line = StartLine; Line < EndLine; Line += LineSize)
asm volatile("icbi 0, %0" : : "r"(Line));
asm volatile("isync");
# elif (defined(__arm__) || defined(__aarch64__)) && defined(__GNUC__)
# elif (defined(__arm__) || defined(__aarch64__) || defined(__mips__)) && \
defined(__GNUC__)
// FIXME: Can we safely always call this for __GNUC__ everywhere?
const char *Start = static_cast<const char *>(Addr);
const char *End = Start + Len;
__clear_cache(const_cast<char *>(Start), const_cast<char *>(End));
# elif defined(__mips__)
const char *Start = static_cast<const char *>(Addr);
# if defined(ANDROID)
// The declaration of "cacheflush" in Android bionic:
// extern int cacheflush(long start, long end, long flags);
const char *End = Start + Len;
long LStart = reinterpret_cast<long>(const_cast<char *>(Start));
long LEnd = reinterpret_cast<long>(const_cast<char *>(End));
cacheflush(LStart, LEnd, BCACHE);
# else
cacheflush(const_cast<char *>(Start), Len, BCACHE);
# endif
# endif
#endif // end apple